Service manual

DOUBLE-DENSITY DISK CONTROLLER 1
1
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Specifications
The Z-89-37 Double-Density Disk Controller interfaces the Z-89/90 Computer with the
Z-37 Floppy Disk.* The Controller will read and write to drives using SOFT-SECTORED
DISKS as follows:
Double-Sided (H-17-4 drives):
96 tracks
per inch
80 tracks per side
Single or double density
Single-Sided (H-17-1 drives):
48 tracks
per inch
40 tracks
Single or double density
Required software is:
HDOS
version 2.0 modified (or higher)
or
CP/M
version 2.2.03 (or higher)
NOTICE:
If a Z-87 Floppy Disk System is to be used with a Z-89 or 2-90 Computer,
proceed to "Reconfiguration" and, if necessary, reprogram the drives in the Z-87 Floppy
Disk.
'Cassette operation is not supported.